Locomotive exhaust mechanism



Mamh 1932- w. E. WOODARD ET AL 1,848,149

LOCOMOTIVE EXHAUST MECHANISM Filed Oct. 12, 1926 2 Sheets-Sheet 1 lNVE ToRs Q2212 BY ATTORNEY:

1932. w. E. WOODARD ET AL 1,848,149

LDCOMOTIVE EXHAUST MECHANI SM .Filed Oct. 12, 1926 2 Sheets-Sheet 2 Patenteel Mar. 8,h1932 I roniisr nIL Ls, Ann rn'wtrsenonen 'rANDY, or" vNEW Yemen. Y.

-Loco1vro'rIvnmrnAirsr ivrnonmrsn Application filed teeter 12, 192 6." sen ltizb 1 '11,os1

I invention relates; to'locomotive e2 ha ust' mechanism', and more particularly to exhaust nozzles. Its primary object is to pro i 6 controlling or'varying the locomotive, exhaust V at Will to suit the varying conditions of o er n." f, h n ine. a a

Variable exhaust mechanisms, the loco-.l ni'otflve art; have notgalways 'p'roven pracat high velocity and oftenv in subfstantial 2O quantities and third, the'gunihiing and corrosion ofparts resulting flbmltlle mixture of moisture from the steam with small particles of coal not to mentionvthe physical vibratiori pounding incident to the intermittentexhaust impulses;

The device or the present invention is. a

variable exhaust nozzle so constructed as to meet these conditlons, and overcome the dis- 7 advantages usually incident to variable ex 9 I I haust mechan1sms,-and,' 1n short as prev 'ously stated; to provide efficienh rugged, and re liable means for varying the locomotive e215 haust. V

further object of the invention is to chieasy adjustment ancl operation in service Still; another object is to provide a mecha nism to accomplish the foregoingwhich shall, at the same time,} be simple of 'construction,-jand readily applicable to existing locomotives, with little or no alteration thereto;

companyingdmwin sin which 7 g Fig 1 is 'a" somewhat diagrammatic" frag mentary side 'eleva=tionalview of a lemmehave not been able to function V )ro 'oerly of the conditions" impasse upon them in service; Among such cond1-.

e5 przitures" obtainin in the snioke boxl th'e roducts of combustion passing therethrough varying froiir500 to 6( )0,F and higher; second,. the Cinders passing from the fines body, insuch a In'echanism,.t he advantages tive showing the a p'iicaetn 6f Defamation thereto; .l w

Fig. 2 i s a section theline 0% 1, With certainparts invelevatiom h t Fig. 3 is an enlarged top view of thev'ari Iable nozzle shown igs; 1 and 2,'half in pla'nand'halfinsection;

' -;Fig; 4 is a section taken line H Fig. 3, illustrating the mounting and control. b

Fig. 5 1st cross section o fone of the fi r taken on theline 5 5 of FigB and:f. j

:Fi'g."6'is a similar cross section,"on the line be see'n 'that We have .tlier-ei llustrated lo e ornfotive smoke box 2 having the usual 3," deflector: plate gscreen or netting 5, dia{ phragm pla'te '6,"eXhaL 1st pipe 7, and other parts, of commonc'onstruction. l Mounted on the exhaust pipe17, inthe position of the usual eXhaust nozzle, is the yariabl-e nozzle 8, of the pi esent invention, thecontro'l lever 9 of which novable from thecab of the engine by means of: the lever 10 adjustable on the quadrantll th e control being effectied through suitable operating rigging', such as the rod 12, rocker arm; 13,. rocker'shaft f 14f; arm 15,: and rod-161: By reference p'arti'c-i ularly to Figs; 2 and i, it will be seenthat I the nozzle is conveniently mounted onthe to'p' of the ordinary eXha-ust pipe by meansof 'R'eferring'nowto Figs. 3andf4l'the'varia ble nozzlejta-ken as awholeg'incluclesa nozzle" i fl r gtheexhaustblast v fingers?! amt their operating ring 26. The v casing as here shown,jcomprisesafltinge How We obtain tthejforegoing; together attached to or mteglal Wlth thellosflle with such other. advantagesas' areinciolent I V 150.- theinvention, or may; appear to those skilledf in the art, will be clear from the-fol lowmg deseription, together with th ential, encased,'channel25i-s-seatedtheob I crating ring 26; which is'a'cla ptd to actuate a plurality of nozzle members For fingers 9 I 2 1, 'antl'a co ver piece formed \vithanannular upper portion 22 and rini QA, this flange and nal channel or groove25i lln thiscircum er;

of the niovable elements or fingers oifjthenoz to r 27, shutterwise, by engagement therewith through the medium of pins 28, each of which extends upwardly in a slot-like or elongated opening 29 in the respective finger 27. Each finger is pivotally mounted, for its shutterwise movement, on one of the pins or bolts 30 which extend through and clamp together the portions 22 and 23 of the enclosing casing. For the movement of the arm 9 actuating the operating ring, there is provided a slot 31 in the side of the device.

The fingers 27, as shown in cross section in Figs. 5 and 6, vary in contour from the base to the tip, being, however, generally wedge-shaped with the entering edge toward the exhaust blast. When constructed as shown, they will, when fully extended, as in Fig. 3, forms four substantially triangular nozzle-like exhaust passages 32. The contour of the inclined faces 33, 34, may be such as to impart a helical motion to the exhaust, and may bear such an angular relation, the one to the other, as to minimize or neutralize any turning movement which might be set up in the finger by-th'eforce of the exhaust impulses, and, thus, to obviatethe tendencyof the exhaust to throw the nozzle out of adjustment.

It will now be clear that in the operation of the device the effective area of the nozzle opening may be varied over a considerable range by the extension or retraction of the fingers 27, without altering the effective overall dimensions or diameter of the blast passage (which, for eificient results, as is well known'in this art, must bear a fixed predetermined relation to the dimensions and relative position of the smoke stack), and that said fingers will all be moved in unison by the operating ring 26, through the medium of the arm 9 and the operating rigging connected to the lever 10 in the cab of the engine. It will also be obvious that the adjustment thereof may be done automatically, by any suitable means, such, for example, as disclosed in Patent No. 1,477,730, issued December 18, 1923, to A. J. Townsend and H. V. Snyder.

All the operating parts of the nozzle are protected from the soot, cinders, and direct heat of the smoke box by the enclosing an nular cover with its channel 25, and even the tips of the nozzle fingers, when "fully retracted, lie wholly within the said channel or recess. The position of the fingers, when fully. retracted, is indicated in dotted lines at the left of Fig. 3. From the foregoing, it may be seen that our device is capable of a wide range of adjustment, is readily installed in existing motive power, is easy ot'operation, rugged'in construction, and well protected from the deleterious efi'ect-s of heat, gases and cinders in the smoke box.

It will be obvious that nozzles 01f oval, rectangular or other cross sectionmight beem ployed, and that variations in the form and number of the nozzle fingers, the construction of the operating rigging, etc., might be made, without departing from the spirit and scope of our invention.

e claim I 1. Locomotive exhaust mechanism comprising a pocketed nozzle, casing with an exhaust passage therethrough, and members extending into said passage and retractable into said pock'et, said members being spaced apart, circumferentially of the passage, so that in either extended or retracted position thereof the effective diameter of the exhaust jet through said passage remains the same.

2. An exhaust nozzle having fingers therein extensible into and retractable from the nozzle passage and spaced apart angularly therearound so that the effective diameter of the exhaust jet remains the same with the fingers in either position.

3. A locomotive exhaust nozzle compris ing a casing having an annular recess and membcrs, located at spaced intervals therearound, extending into the exhaust passage and retractable into said recess.

4. A. locomotive exhaust nozzle comprising a casing having an annular recess and members extending into the exhaust passage and pivotally mounted for retraction into sai l recess. p i

5. A locomotive exhaust nozzle'comprising a casing having an internal peripheralan nular recess and members mounted therein and pivotally mounted for retraction into said recess, together with an operating ring and means connecting said ring and said members. 7 V

8. A locomotive exhaust nozzle comprisinga casing having an annular recess and members extending into the exhaust passage and pivotally mounted for retraction into said recess, together with operating mechanism therefor also mounted in said recess.

9. Inmechanism of the character described,

a casing constructed with an exhaust passage therethrough, and an internal peripheral channel, fingers pivotally'mounted in the channel each having an elongated opening therein, and an annulus seated in the channel and havlng membersengagmg said elongated haust line, whereby the stream openings, said annulus being adapted when moved to swing said fingers horizontallylon T their Ipivots and extend them into said pas sage.

10.In mechanism of the character described, a casing constructed with an exhaust v passage therethrough, and aninternal peripheral channel, fingers pivotally mountedin the channel each having an elongated opening therein, a rotatable annulus seated in the channel and having means of engagement with said elongated openings, and 0perating mechanism for the annulus.

11. In mechanism of the character described, a casing constructed with an exhaust passage 'therethrough, and an internal peripheral channel, fingers pivotally mountedin'the channel each having an elongated opening therein, a rotatable annulusseatedin the channel and having means of engagement with said elongated openings, and 0p' 'erating mechanism'forthe annulus, comprising an arm attached thereto and extending through the casing, and rigging-extending i from thence to thecab of the locomotive;

12. In a variable exhaust nozzle, a retractable finger of's'ubstantially wedge cross-section, disposed with the entering edge of the wedge toward the stream of the exhaust line, whereby the stream is divided'when the finger is extended.

13. ,In a variable exhaust n0zz1e,'a retractable finger of substantially wedge cross-section'and varying in contour progressively from its end disposed with the entering edge of the wedge toward the stream of the ex- 7 is divided when the finger is extended. I

14:. An exhaust nozzle having members of wedge-shaped cross-section mounted for a diaphragm shutter movement into and out of the nozzle passage and each vdisposed to present an entering edge of the wedge tothe stream of exhaust whereby the stream is divided when the members are in extended position.

15. An exhaust nozzle having I pivoted members swingable horizontally into and out of the exhaust passage, the pivot points being spaced apart peripherally of the vnozzle 1 at intervals wider than the width of said members.

16. Locomotive exhaust. mechanism 1 formed with a blast passage of predeter- 7 mined outside dimensions,

mounted for extension into the line of said blast to alter its cross-sectional area, and s0 positioned with respect to the passage and to each other as to leave the effective-outside j V 3 dimensions of the former substantially unaltered by extension'of the members;- e

In testimony whereof we have hereunto signed our names.

WILLIAM E. WOODARD.

L.- GEORGE TANDYQ and members 

